Keyless padlock.



J. LANDEEN. KEYLESS PADLOCK.

APPLICAHON FILED SEPT-12, I916- a Z, a a e I INVENTORV w 335 M Z] Liane 2072096274 BY I ATTORNEY Cit UNITED STATES PATENT OFFICE.

JAMES LANDEEN, OF SIDNEY, OHIO.

KEYLESS PADLOCK.

To all u 72 0121. may concern:

Be it known that I, JAMns LA'NDEEN a citizen of the United States, residing at Sidney, in the county of Shelby and State of Ohio, have invented certain new and useful Improvements in Keyless Padlocks, of which the following is a specification.

This invention relates to keyless padlocks, and the primary object of theinvention is to provide a casing adapted to receive the ends of a removable shackle, the casing containing locking mechanism adapted to unlock the ends of the shackle whereby the said ends will he simultai'ieously locked or unlocked by the operation of the locking mechanism.

As a further object of the invention the lock is provided with a plurality of buttons disposed upon the exterior of the lock casing, some of the buttons being arranged for the purpose of confusing a person attempting to open the look without knowing the means of operating the same, while two of the buttons are connected with the operating mechanism in a manner that will permit the lock to be unlocked when said buttons are operated in the proper manner.

As another object of the invention the locking mechanism of the device includes a pair of operating fingers to which coilsprings are connected, the ends of which are fastened to the dead buttons, whereby a person attempting to open the lock may move the dead buttons through the slots provided for the same, while the coil-springs eifect a resistance to the buttons thereby giving to the intruder the impression that the said dead buttons are employed when the proper operating mechanism is to be operated. 1

A further object of this invention is the provision of a keyless padlock which consists of comparatively few parts and is simple in construction, but durable and well adapted to withstand the rough usage to which devices of this character are ordinarily subjected.

For a full description of the invention and the advantages and merits thereof, referonce is to be had to the following description and the accompanying drawings, wherein is illustrated the preferred form of my invention, in which,

Figure 1 is a side elevation showing the shackle in locked position,

Fig. 2 is a longitudinal section through Specification of Letters Patent.

Application filed September 12, 1916.

Patented May 22, 1917.

Serial No. 119,681.

the casing, showing the shackle disposed in unlocked position, and

Fig. 3 is a similar view, showing the lock in locked position.

Referring to the drawing wherein is illustrated the preferred form of my invention and in which like characters of reference designate corresponding parts throughout the several views, the casing 1 is of rectangular formation and is provided with a cover plate 2 fastened to the casing by a bolt or rivet One edge of the casing is provided with the passage ways 4: for receiving the ends 5 of the shackle 6. Each end 5 of the shackle has a rectangular recess 7 for receiving the locking elements hereinafter described.

Extending transversely through the casing 1 are the supporting bars 8 which have their ends secured to the casing wall and are disposed in longitudinal spaced relation, as clearly shown by Figs. 2 and 3 of the drawing. Mounted upon each supporting bar is a latch 9 which is substantially rectangular in formation and has its end provided with a beveled face 10. A slot 11 in each latch 9 receives the supporting bar 8 so that the latches are free to move longitudinally in the casing for a distance pro vi ded by the length of the slot 11. of each latch, upon which the beveled face 10 is formed, is, when the lock is in unlocked position, disposed at a point whereby it will lie in the path of movement followed by the ends 5 of the shackle when the same are The end thrust through the passage-ways 4. It will be observed in this connection, that the ends 5 are also provided with beveled ends 5 which contact with the beveled surfaces 10 when the shackle is thrust into the casing.

Lateral extensions 12 are formed on the latches 9 and are provided with openings for receiving the ends of the operating fingers 13. A trunnion let is carried by one wall of the casing and pivotally receives each of the operating fingers 13 which. have their ends curved so that they may be projected into the openings in the keepers 12. The opposite ends of the operating fingers 13 are provided with projections 15 carrying pins 16 which are projected through arcuate slots '17 formed in the wall of the casing and in the cover 2 thereof. The curve of the arcuate slots 17 is struck from the center of the trunnion 14 so that the pins 16 will swing the length of the slot when the operating fingers are operated. Arranged on the outside of the cover plate 2 are operating buttons 18 which are connected to the pins 16 so that the operator of the lock may place his fingers upon the buttons 18 and move each pin 16 through its corresponding slot 17. This operation will draw the curved ends of the operating fingers toward each other thereby causing the latches 9 to slide inwardly on the supporting arms 8 and thus release the same from the recesses 7 in the shackle. A compressionspring 19 has its ends engaged in the proximate end of each latch and normally tends to hold the latches in engagement withv the recess 7. The operating fingers 13, there fore, operate against the compression of the spring 19 when the levers or fingers are operated to unlock the latches.

Arranged adjacenteach lower corner of the casing are the obliquely disposed slots 20 which receive the pins 21, each of which is connected to one end of a coil-spring 22. The opposite end of each coil-spring 22 is "fastened to one of the operating levers 13 at a point between the curved end thereof and the trunnion 11 so that the springs 22, which are of the tension type, tend to normally hold the operating fingers spread apart whereby the latches 9 will be normally held in locked position. In addition to this function of the springs 22, the same are employed for confusing an intruder who might attempt to operate the look without knowledge of the proper means for doing so. The pins 21, therefore, are provided with the buttons 23 which are termed dead buttons, their purpose being to give the appearance of being a part of the operating mechanism for the lock. These buttons may be moved for permitting the pins 21 to move through the slots 20 against the tension of the spring 22 and, the operator will by virtue of this movement, receive the impression that the buttons 23 are necessary to the proper operation of the lock.

From the foregoing it will be observed that a very simple and durable keyless padlock has been provided, the details of which embody the preferred form. I desire it to be understood, however, that slight changes in the minor details of construction may be made without departing from the spirit of the invention or the scope of the claims hereunto appended.

I claim:

1. A lock of the character described comprising, a casing having a plurality of obliquely disposed slots formed in its side walls, a shackle having each of its ends disposed within the casing, means for lock-- ing the said ends of the shackle within the Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

casing, and operating means arranged upon the exterior of the casing and including pins extended through some of the said slots and connected to the said locking means, other of said slots carrying pins having buttons fastened thereto ostensibly tor the purpose of operating the said lock.

2. A look of the character described comprising a casing, supportingmea-ns transversely extending through the casing and connected to the side walls thereof, locking latches mounted upon the said supporting means, the ends of the said latches adapted to be moved toward or away from the center of the said casing, ashackle having its ends extended into the said casing whereby said shackle ends engage with said latches, and operating means connected to the said locking means and including a plurality of buttons some of which are disconnected from the said locking means.

8. A lock of the cha 'acter described cone prising a casing, a shackle adapted to be extended into the casing and locked therein, means for engaging the shackle for 10010 ing them 'within the casing, av trunnion cone trally located and arranged between the walls of the casing, operating fingers pivotally mounted upon the trunnion and having their ends disposed in spaced relation and engaged with the said locking means, and means connected to the opposite ends of the said fingers for moving the said locking means out of engagement with the said ends of the shackle.

4. A lock of the character described comprising a casing, a shackle having its ends projected into the casing, a pair of latches slidably mounted and adapted to engage the ends of the said shackle, the said latches having keepers carried by their proximate ends, operating means pivotally mounted and adapted to cooperate with the said keepers for moving the latches toward or away from each other whereby they will disengage or engage the ends of the said shackle, and means for holding the said latches in engagement with the said ends and including a pair of coil springs connected to said operating means, and a plusome of said buttons being connected to the operating means and the other buttons joined to the opposite terminals of the said coil springs, ostensibly for the purpose of forming a part of the operating means.

In testimony whereof I aflix my signature in presence of two witnesses.

JAMES LANDEEN. Witnesses D. F. MILLS, JAMES PAPAS.

Washington, D. 0.

rality of buttons mounted upon the casing, 1 

